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MR Guidance of Sympathetic Nerve Blockade: Measurement of Vasomotor Response—Initial Experience in Seven Patients¹

¹ From the Division of Cardiovascular and Interventional Radiology, Department of Radiology (D.Y.S.), and Division of Pain Management, Department of Anesthesiology (S.C.M.), Stanford University Medical Center, 300 Pasteur Dr, Stanford, CA 94305. Received April 11, 2001; revision requested May 18; revision received August 24; accepted September 28. Address correspondence to D.Y.S. (e-mail: dansze@stanford.edu).

The authors performed sympathetic nerve blockades in seven patients with peripheral ischemia and possible autonomic dysfunction. Magnetic resonance (MR) imaging was used to guide needle placement, to monitor distribution of injected agents, and to measure increases in blood flow, which were as much as 10-fold. MR imaging can provide both procedural imaging guidance and measurement of efficacy for sympathetic nerve blocks.

© RSNA, 2002

Index terms: Anesthesia, 30.1264, 90.1266 • Blood, flow dynamics, 30.12141, 90.12941 • Magnetic resonance (MR), cine study, 30.12141, 30.12144, 90.12941, 99.12944 • Magnetic resonance (MR), guidance, 30.1264, 90.1266 • Nerves, interventional procedures, 30.1264, 90.1266 • Nerves, peripheral, 30.1264, 90.1266

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